You need to look into a radio system.
"Chris Wakeen" <cwakeenwakeenphotography.com> wrote in message
news:vh43ncd7o3m0c2corp.supernews.com...all> A while back I posted here looking for recommendations regarding which
> optical slave to use. I ended up using a Nikon SU-4. It worked fine butan> the other flashes in the room (wedding reception. Please don't flame me. I
> still had my on-camera flash!) were triggering mine. As a result, many of
> the (secondary) flash exposures were unacceptable because the flash hadn't
> recycled quickly enough when I took my picture. So I tried another set-up.
> This time it was an IR slave. A Wein Pro-Sync. In the past, this IR slave
> has worked well with studio lights. Anyway, here is the exact rig I am
> using: An F5 or F100 on a Stroboframe Press-T bracket, an SC-17 cord andrig> SB-28. The other day I added a Nikon AS-E900 (from my Cool-Pix 995) to
> trigger the IR slave transmitter. The AS-E900s cord is inserted into the
> port on the SC-17, so the AS-E900 and transmitter are last in line. Thisit> tested perfectly at home. Many times with no "line of sight". So I triedtime.> at a wedding this past weekend. It didn't work well. Maybe half of themodel).> Even when I pointed the transmitter directly at the receiver from 20 feet
> away, it didn't always fire the slaved flash (Vivitar 285. Not a HVcan't> I tried the 285 in "Auto" modes and manual. It didn't seem to make any
> difference. A little later on when I got a short break, I tried switching
> the SC-17 and AS-E900 (now the SC-17 is last in line) and very quickly
> tested. It seemed to work better but I really couldn't test further. Ihere?> see how reversing the cords can make any difference. What am I missing> Thanks in advance for any and all insight.